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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-04-23 21:19:36 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-04-23 21:50:15 +0200 |
| commit | 68301ef471b63f25d6e6144a0820fea52257a34a (patch) | |
| tree | d49df06041c10b2f5bffe3299fbc95f4976c953a /drivers/acpi/x86 | |
| parent | ed30a4a51bb196781c8058073ea720133a65596f (diff) | |
| download | linux-68301ef471b63f25d6e6144a0820fea52257a34a.tar.gz linux-68301ef471b63f25d6e6144a0820fea52257a34a.tar.bz2 linux-68301ef471b63f25d6e6144a0820fea52257a34a.zip | |
ACPI: PM: s2idle: Evaluate all Low-Power S0 Idle _DSM functions
Commit 073237281a50 ("ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT
UUID for non-AMD systems") attempted to avoid evaluating the same Low-
Power S0 Idle _DSM functions for different UUIDs, but that turns out to
be a mistake, because some systems in the field are adversely affected
by it.
Address this by allowing all Low-Power S0 Idle _DSM functions to be
evaluated, but still print the message regarding duplication of Low-
Power S0 Idle _DSM function sets for different UUIDs.
Fixes: 073237281a50 ("ACPI: PM: s2idle: Enable Low-Power S0 Idle MSFT UUID for non-AMD systems")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218750
Reported-and-tested-by: Mark Pearson <mpearson@lenovo.com>
Suggested-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Diffstat (limited to 'drivers/acpi/x86')
| -rw-r--r-- | drivers/acpi/x86/s2idle.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c index cd84af23f7ea..dd0b40b9bbe8 100644 --- a/drivers/acpi/x86/s2idle.c +++ b/drivers/acpi/x86/s2idle.c @@ -492,16 +492,14 @@ static int lps0_device_attach(struct acpi_device *adev, unsigned int func_mask; /* - * Avoid evaluating the same _DSM function for two - * different UUIDs and prioritize the MSFT one. + * Log a message if the _DSM function sets for two + * different UUIDs overlap. */ func_mask = lps0_dsm_func_mask & lps0_dsm_func_mask_microsoft; - if (func_mask) { + if (func_mask) acpi_handle_info(adev->handle, "Duplicate LPS0 _DSM functions (mask: 0x%x)\n", func_mask); - lps0_dsm_func_mask &= ~func_mask; - } } } |